Public bug reported: Even if keyboard-interactive authentication is disabled in .ssh/config or on the command-line, ssh(1) will go ahead and try it if supported by the server. (The client *does* respect PasswordAuthentication=no and PubkeyAuthentication=no.)
Using Ubuntu 13.10 Server 64-bit. $ ssh -v -o KbdInteractiveAuthentication=no 127.0.0.1 OpenSSH_6.2p2 Ubuntu-6ubuntu0.1, OpenSSL 1.0.1e 11 Feb 2013 debug1: Reading configuration data /home/user/.ssh/config debug1: /home/user/.ssh/config line 1: Applying options for 127.0.0.1 debug1: Reading configuration data /etc/ssh/ssh_config debug1: /etc/ssh/ssh_config line 19: Applying options for * debug1: Connecting to 127.0.0.1 [127.0.0.1] port 123. debug1: Connection established. debug1: identity file /home/user/.ssh/id_rsa type 1 debug1: Checking blacklist file /usr/share/ssh/blacklist.RSA-4096 debug1: Checking blacklist file /etc/ssh/blacklist.RSA-4096 debug1: identity file /home/user/.ssh/id_rsa-cert type -1 debug1: identity file /home/user/.ssh/id_dsa type -1 debug1: identity file /home/user/.ssh/id_dsa-cert type -1 debug1: identity file /home/user/.ssh/id_ecdsa type -1 debug1: identity file /home/user/.ssh/id_ecdsa-cert type -1 debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_6.2p2 Ubuntu-6ubuntu0.1 debug1: Remote protocol version 2.0, remote software version OpenSSH_6.2p2 Ubuntu-6ubuntu0.1 debug1: match: OpenSSH_6.2p2 Ubuntu-6ubuntu0.1 pat OpenSSH* debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: server->client aes128-ctr hmac-md5-...@openssh.com none debug1: kex: client->server aes128-ctr hmac-md5-...@openssh.com none debug1: sending SSH2_MSG_KEX_ECDH_INIT debug1: expecting SSH2_MSG_KEX_ECDH_REPLY debug1: Server host key: ECDSA xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx debug1: Host '[127.0.0.1]:123' is known and matches the ECDSA host key. debug1: Found key in /home/user/.ssh/known_hosts:50 debug1: ssh_ecdsa_verify: signature correct debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: Roaming not allowed by server debug1: SSH2_MSG_SERVICE_REQUEST sent debug1: SSH2_MSG_SERVICE_ACCEPT received debug1: Authentications that can continue: keyboard-interactive debug1: Next authentication method: keyboard-interactive Password: ** Affects: openssh (Ubuntu) Importance: Undecided Status: New ** Tags: saucy -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to openssh in Ubuntu. https://bugs.launchpad.net/bugs/1263358 Title: ssh client disregards KbdInteractiveAuthentication option To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/openssh/+bug/1263358/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs